Question

Nina can ride her bike 63,360 feet in 3,400 seconds, and Sophia can ride her bike 10 miles in 1 hour. What is Nina’s rate in miles per hour if there are 5,280 feet in a mile?

Answer 1

Answer:12.7

Explanation:

Answer 2

Nina's rate is 12.7059 miles per hour (answer rounded up to four decimal places).

Explanation:

Nina can ride her bike 63,360 feet in 3400 sec

1 mile = 5,280 feet

How many miles = 63,360 feet ?

Its 63,360 feet ÷ 5,280 feet × 1 mile = 12 miles

Nina's rate is 12 miles per 3400 seconds

1 hour = 3600 seconds

So in 1 hour, Nina rides
`(3600)/(3400)` × 12 miles = 12.7059 miles (rounded up to four decimal places)

Nina's rate is 12.7059 miles per hour (answer rounded up to four decimal places).